FIELD: electricity.
SUBSTANCE: high-voltage insulator intended for fixation of a high-voltage wire in an electric installation or a power transmission line contains an insulating body, which first end is designed for mechanical connection to the high-voltage wire and/or its fixing device and its second end is connected to metal fittings designed for fixing of the insulator at the pole. In order to ensure properties of lightning ground (lightning arrester) for the device, it is equipped additionally with a multi-electrode system (MES) consisting of 5 and more (100 and more is preferable) electrodes coupled mechanically to the insulating body and placed between its ends. The electrodes are mounted so that they can generate electric discharge between the adjacent electrodes, between the electrode adjacent to the first end of the insulating body and the high-voltage wire or its metal fittings, as well as between the electrode adjacent to the second end of the insulating body and the metal fittings connected to the pole. The MES electrodes are positioned inside the insulator body and separated from its surface by an insulation layer. Arranged between the adjacent electrodes are discharge chambers reaching the insulation body surface.
EFFECT: higher discharge extinction voltage at maintenance of a distance between the electrodes.
9 cl, 2 dwg
